What is Countervail Technology and what does it do you might ask? Countervail is an all-new material technology, used by NASA for space travel, integrated into the racquet to maximize a player's energy, reduces muscle fatigue and shortening recovery time. It does this by transferring less of the ball's energy into the players body, which decreases the amount of energy you need to expend on each swing. High Performance Carbon Fiber is used to provide the stiffness and strength necessary for you to burn through the competition. With Parallel Drilling and responsive a 16x19 string bed, this racquet has ample amounts of power and spin but with a slightly smaller headsize for added control and stability. With the new X2 Shaft, this new line of racquets has extra long handles by shorten the throat to allow players more room for their hands on two-handed backhands.